Rotary pump.



I. s. SHOCKLEY.

ROTARY PUMP:

APPLICATION man MAY 29. ms.

1 40,264,- Patented Sept. 18, 1917.

2 SHEETS-SHEET I.

lllllllllllll O Snow wow J5: .slzacldey 1,240,264. I v PatentedSept. 18, 19171 1.3-. SHOCKLEY.

ROTARY PUMP. APPLICATION FILED MAY 29. I916.

2 SHEETS-SHEETZ.

I I I4 14 1 i? 7 6'0 15 30 z a I: S MO'L JILES S. SHOCKLEY, 0F NASHVILLE, TENNESSEE, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OE TEN ONE-HUNDREDTHS TO WILLIAM L. DANLEY AND EIGHTY ONE-HUNDBEDTHS TO LOUIS F. BUTLER, BOTH OF NASHVILLE, TENNESSEE.

ROTARY PUMP.

To all whom it may concern:

Be it known that I, JILEs S. SHooKLnY, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification.

This invention contemplates an improved rotary pump and has as its primary object to provide a device of this nature which will be characterized by extreme simplicity of construction while, at the same time, the pump will be thoroughly efiicient in operation, it also being a further aim of the invention in this connection to provide a pump which may, if desired, also be used as a motor. 2

The invention has as a further object to provide in a pump of this character a rotor which may be cast and which will thus dispense with the necessity of milling or other manual finishing to complete the rotor.

The invention has as a still further object, in this connection, to provide an arrangement wherein the pistons or buckets may be readily attached to or detached from the rotor and also wherein the said pistons will be connected to opposite side faces of the rotor to thus equalize the load thereon.

And a further object of the invention is to provide a pump of this character employing pistons each formed of detachably connected sections, so that the said pistons may be connected to opposite sides of the rotor, and wherein the means provided for connecting the sections of the pistons respectively will also serve to hold the said pistons in operative position attached to the rotor.

Other and incidental objects will appear as the description proceeds and in the drawings wherein I have illustrated the preferred embodiment of the invention and wherein similar reference characters designate corresponding parts throughout the several views,

Figure 1 is a side elevation of my improved pump with one head thereof removed, this view particularly showing the mounting of the rotor within the casing of the pump, 7

Fig. 2 is a section on the line 22 of Fig. 1 and particularly showing the detailed construction of the pump,

Fig. 3 is a perspective view showing the Specification of Letters Patent.

Patented Sept. 18, 1917.

Application filed May 29, 1916. Serial No. 100,665.

rotor detached andparticularly illustrating the formation thereof, and

Fig. 1 is a similar view of one of the pistons detached and illustrating the construction of the mating sections thereof.

In carrying out the invention, I employ a cylindrical casing 10 which isclosed at one side by an integral head 11 and at its opposite side by a head 12 detachably connected to the casing by a plurality of screws or other approved fastening devices 13 engaging through a suitable radial flange 14 carried by the casing. A chamber is thus formed within the casing and communicating with the said chamber adjacent one side of the casing is an lnlet port 15 while a similar outlet port 16 communicates with the said chamber adjacent the opposite side of the casing. Journaled in the heads 11 and 12 of the casing is a transversely extending driven shaft 17 and, as best shown in Fig. 2 of the drawings, the said heads are provided with packing glands 18 for receiving the said shaft.

The shaft 17 is arranged eccentrically of the casing 10 and keyed or otherwise secured to the said shaft is a rotor. This rotor in cludes a hub 19 through which the shaft 17 is fitted and extending from the said hub is a radial web or body 20 surrounded by an annular rim 21 overhanging the web 20 upon opposite sides thereof and provided with a smooth outer surface, to touch and coact with the curved circumferential wall of the easing between the ports 15 and 16. Formed on opposite sides of the web 20 to extend between the hub 19 and rim 21, is a laterally projecting diametric reinforcing fin 22, this fin, at its outer edges, terminating flush with the ends of the hub and the side edges of the rim, so that the rotor is snugly received between the confronting faces of the heads 11 and 12 of the casing.

Projecting laterally from the sides of the web 20 upon opposite sides of the fin 22, are pairs of oppositely disposed bearing blocks 23 which, at their outer extremities, respectively terminate in coacting pivot pins 241. As particularly shown in Fig. 1 of the drawings, the pairs of blocks 23 are spaced upon opposite sides of the hub 19. Formed in the web 20 in concentric relation to the pairs of pivot pins 24 respectively are arcuate slots 25 which open through the rim 21 upon oplrons.

posite sides of the rotor. The rim isformed, at corresponding sides of the said slots with curved or rounded edges 26 and at opposite corresponding sides of the said slots with beveled edges 27 through which open packing receiving grooves or channels 28. 7

Attention is now directed to the fact that the rotor thus formed may beconstructed as a single casting and is of such nature that the necessity for milling or other manual finishing to perfect the rotor will be eliminated. Obviously, anv advantageous arrangement is, therefore, provided in this regard and one which will form a material consideration in the practical manufacture of the invention. I

Mounted upon the rotor are coacting reversely' arranged pistons or buckets. These pistons are each formed, as shown in detail in Fig. 4 of the drawings, of mating sections and respectively include a transverselyzsplit head 29 from the extremities of which project laterally extending arms 30 arranged at theinner corners of the head, these arms being preferably in 'the nature of angle The arms 30' are curved longitudinally and at their outer extremities, are provided with suitable bearings 31 to receive the pivot pins 24 of the rotor. Extending around the outer edges of the head 29 upon the underside thereof, is a laterally projecting reinforcing flange 32 and this flange upon the forward side of the head is pro vided with a beveled bearing face 33 to engage, as particularly shown in Fig. 1 of the drawings, with the curved annular wall of the casing 10. Projecting laterally beneath the head at the rear side thereof is a longitudinally extending reinforcing rib 84. This rib, upon one of the sections of the piston, is provided with a longitudinally extending bore 35 and upon the other section of the piston is provided with a screw threaded bore 86 adapted to register with the bore 35.

The pistons thus described are arranged upon the rotor, as particularly seen in Figs. 1 and 2 of the drawings, with the arms 30 of the said pistons connected toopposite sides of the web 20 and swingingly supported upon the oppositely disposed pairs of pivot pins 24- by the bearings '31 which abut the bearing blocks 23 with the heads or blades 1 of the pistons disposed for move ment within the slots 25. Connecting the sections of the pistons are tie rods 37 which extend freely through the bores 35 and detachably engage in the bores 36 of the said pistons with the heads 29 thereof snugly fitting between the heads 11 and 12 of the casing. It will now be noted that in thus forming the pistons in sections, the said pistons may be easily attached to or detached from the rotor. and the rods37 not only act to rigidly connect the sections of the pistons but also act to hold the bearings 31 of the arms 30 in engagement with the pivot pins 24. Furthermore, it will be seen that the pistons are each s'wingingly' connected to op posite side faces of the rotor to thus equalize the load thereon.

Thepistons are arranged with the curved outer faces of the heads thereof confronting theedges 27 of the slots through the rim. 21 of the rotor so that the packing within the grooves 28 .will'form a tight joint between the piston heads and the rotor. In this connection, it will be observed that the inner sides of the piston heads are arranged to contact onlyattheir ends with the edges26 of the said slots and are supported and v guided in their swinging movement by the portions of the flanges 32 at the ends of'th'e piston heads whichfian'ge portions provide bearing members disposed to engage the edges 26 for the purposes indicated. T This arrangement very materially reduces friction and a consequent possible wear of the piston heads against the rim ofthe rotor. and accordingly enhances the free swinging movement of the pistons. In operation, the rotation of the shaft 17 will, through -centrifu gal action urge the pistons to swing outwardly upon the rotor, with the bearing faces 33 ofthe heads thereof engaging the curved annular wall of the casing. The pistons, upon passing over the area of said wall between the inlet and outlet ports 15 and 16 at one side of the casing, will then sweep through the chamber provided at the opposite side of the casing between the rotor and the said casing. When the pump is first started, the pistons will consequently set up a suction within the casing to draw water inwardly through the inlet port 15 and prime the p'ump,when the said pistons will then act to cause a continuous stream to flow inwardly through the said inlet port to be discharged through the outlet port 16. i The pistons, upon being advanced from a position between the outlet and inlet ports to- .ward'the inlet port 15, will begin to swing entering through the said inlet port. Then,

as the pistons are farther advanced within the casing, the piston heads will sweep the water in the front thereof toward the outlet port 16 and, as the said pistons approach the outlet port, they'will gradually be retracted inwardly within the lines of the rotor by the curved annular wall of the casing to permit the discharge of the water through the said outlet port. In this connection, it is further to be observed that the flanges of the piston headsso support the said piston heads with in the slots 25 of the rotor that commrmication is established between the interior chamber of the "casing and the interior ofthe rotor at the inner sides of the piston head's. When the device is, used as 'a suction pump,

the rotor is turned in a counter-clockwise direction and the lifting action or suction of the pump will consequently be increased ac cordingly. However, when the device is to be used as a force pump, the rotor is then turned in a reverse or clockwise direction so that the outlet port 16 will then become the inlet port while the inlet port 15 will become the outlet-port. When so turned, the outer sides of the piston heads will be presented to the work and owing to the presence of the packing between the outer sides of the piston heads and the rim of the rotor, tight joints will be provided between the rotor and the piston heads so that the said pistons will thus efficiently act to provide a force pump.

From the preceding description, it will be seen that my improved pump ma if desired, be employed as a motor. When so used steam may be admitted through the inlet port 15 to act upon the pistons and rotate the shaft 17 in a manner which will be readily understood.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A device of the character described including a casing having inlet and outlet ports, a rotor eccentrically mounted within the casing to coact therewith, a sectional piston having a head cooperating with the casing, and means rigidly connecting the said sections with the sections supported by opposite side faces of the rotor.

2. A device of the character described in cluding a casing having inlet and outlet ports, a rotor eccentrically mounted within the casing to co-act therewith, and a sectional piston swingingly mounted upon the rotor, the said piston including a head split intermediate its length, arms carried by the portions of the head and connected to opposite side faces of the rotor, and means rigidly connecting the said sections and holding the pistons in engagement with the rotor With the piston head mounted to cooperate with the casing.

3. A device of the character described including a casing having inlet and outlet &

ports, a rotor eccentrically mounted Within the casing to coact therewith, and a sectional piston freely connected with the rotor, the said piston including a head having a portion thereof carried by each section of the piston, and means extending freely through one portion of the head and engaging the other portion thereof for rigidly connecting the said sections with the piston head mounted to cooperate with the casing.

4. A device of the character described including a casing, having inlet and outlet ports, a rotor eccentrically mounted within the casing and including a rim coacting with the casing, there being a slot formed through said rim, and a piston freely connected to opposite side faces of the rotor and including a head swingingly mounted for movement in said slot to cooperate with the casing, and guide members carried by the said head and engaging an adjacent wall of said slot for directing the head in its swinging movement.

5. A device of the character described including a casing having inlet and outlet ports, a rotor eccentrically mounted within the casing and including a rim having a slot formed therethrough, and a piston freely connected to the rotor and including a head swingingly mounted for movement in said slot to cooperate with the casing, and hearing members projecting from opposite eX- tremities of said head and engaging an ad jacent wall of said slot for supporting the head to move therein.

6. A device of the character described including a casing having inlet and outlet ports, a rotor eccentrically mounted within the casing and including a rim having a slot formed therethrough, a piston freely connected to the rotor and including a head swingingly mounted for movement in said slot to cobperate with the casing, and a flange formed on the head and engaging an adjacent wall of said slot for supporting the head in its movement therein.

In testimony whereof I aiiiX my signature.

JILES s. sHocKLEY. 1,. 3.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

